Add missing period to return doc

Co-authored-by: Adam Silverstein <adamjs@google.com>

plugins/embed-optimizer/class-embed-optimizer-tag-visitor.php

@@ -48,7 +48,7 @@ private function is_embed_figure( OD_HTML_Tag_Processor $processor ): bool {
  * @since n.e.x.t
  *
  * @param OD_HTML_Tag_Processor $processor Processor.
- * @return bool Whether the tag should be measured and stored in URL metrics
+ * @return bool Whether the tag should be measured and stored in URL metrics.
  */
  private function is_embed_wrapper( OD_HTML_Tag_Processor $processor ): bool {
  return (